Physics, 19.09.2019 19:50 deepspy599otchpd
Mary starts from her house, walks 80 meters south, and stops to chat with her aunt on the sidewalk. after chatting for a few minutes, she walks 125 meters to the west to meet a friend and then walks 45 meters north with her friend to a cafe for lunch. overall, she takes 10 minutes to do all this. what is mary’s average speed?
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Mary starts from her house, walks 80 meters south, and stops to chat with her aunt on the sidewalk....
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